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recents_category_drag_drop

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Add the cell drag and drop.
This commit is contained in:
yannick
2015-12-11 14:59:55 +01:00
parent 7d790e4a2f
commit 922607d521
3 changed files with 119 additions and 13 deletions
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Vector/ViewController/RecentsViewController.m
+43 -2
View File
@@ -38,8 +38,10 @@
HomeViewController *homeViewController;
// recents drag and drop management
UIView *cellSnapshot;
UIImageView *cellSnapshot;
NSIndexPath* movingCellPath;
NSIndexPath* lastPotentialCellPath;
}
@end
@@ -465,6 +467,8 @@ static NSMutableDictionary* backgroundByImageNameDict;
#pragma mark - recents drag & drop management
static UITableViewCell* cell = nil;
- (IBAction) onRecentsLongPress:(id)sender
{
RecentsDataSource* recentsDataSource = nil;
@@ -510,6 +514,7 @@ static NSMutableDictionary* backgroundByImageNameDict;
UIGraphicsEndImageContext();
cellSnapshot = [[UIImageView alloc] initWithImage:image];
recentsDataSource.movingCellBackGroundView = [[UIImageView alloc] initWithImage:image];
// display the selected cell over the tableview
CGPoint center = cell.center;
@@ -518,7 +523,19 @@ static NSMutableDictionary* backgroundByImageNameDict;
cellSnapshot.alpha = 0.5f;
[self.recentsTableView addSubview:cellSnapshot];
cell = [[UITableViewCell alloc] init];
cell.frame = CGRectMake(0, 0, 100, 80);
cell.backgroundColor = [UIColor redColor];
[self.recentsTableView beginUpdates];
lastPotentialCellPath = indexPath;
recentsDataSource.movingCellIndexPath = indexPath;
[self.recentsTableView insertRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationNone];
[self.recentsTableView endUpdates];
movingCellPath = indexPath;
}
break;
}
@@ -578,6 +595,18 @@ static NSMutableDictionary* backgroundByImageNameDict;
[self.recentsTableView setContentOffset:contentOffset animated:NO];
}
NSIndexPath *indexPath = [self.recentsTableView indexPathForRowAtPoint:location];
if (![indexPath isEqual:lastPotentialCellPath])
{
[self.recentsTableView beginUpdates];
[self.recentsTableView moveRowAtIndexPath:lastPotentialCellPath toIndexPath:indexPath];
lastPotentialCellPath = indexPath;
recentsDataSource.movingCellIndexPath = indexPath;
[self.recentsTableView endUpdates];
}
break;
}
@@ -596,12 +625,18 @@ static NSMutableDictionary* backgroundByImageNameDict;
// the destinated row is retrieved from the moving cell (center comparison)
int row = (location.y > cell.center.y) ? indexPath.row + 1 : indexPath.row;
[recentsDataSource moveCellFrom:movingCellPath to: [NSIndexPath indexPathForRow:row inSection:section]];
[recentsDataSource moveCellFrom:movingCellPath to: lastPotentialCellPath];
[cellSnapshot removeFromSuperview];
cellSnapshot = nil;
movingCellPath = nil;
[self.recentsTableView beginUpdates];
[self.recentsTableView deleteRowsAtIndexPaths:@[lastPotentialCellPath] withRowAnimation:UITableViewRowAnimationNone];
lastPotentialCellPath = nil;
recentsDataSource.movingCellIndexPath = nil;
[self.recentsTableView endUpdates];
break;
}
@@ -612,6 +647,12 @@ static NSMutableDictionary* backgroundByImageNameDict;
[cellSnapshot removeFromSuperview];
cellSnapshot = nil;
movingCellPath = nil;
[self.recentsTableView beginUpdates];
[self.recentsTableView deleteRowsAtIndexPaths:@[lastPotentialCellPath] withRowAnimation:UITableViewRowAnimationNone];
lastPotentialCellPath = nil;
recentsDataSource.movingCellIndexPath = nil;
[self.recentsTableView endUpdates];
break;
}
}